Corrugating machine



MayS, 1925. 1,536,897

s. LOAFEA' 4 CORRUGATING MACHINE Filed July 5. 1923 3 Sheets-Sheet l INVEN TOR.

3 Shets-Sheet' 2.

mmgrox S. LOAFEA v GORRUGATING MACHINE Filed July 5. 1923 V May 5, 1925.

1,536,897 S. LOAFEA CORRUGATING MACHINE Filed July 5. 1923 3 Sheet s -Sheet 3 v Ill 7 INVEN TOR.

; flu (STATES Patented M ay i 5, 1925.

sAHUEnL'oArEA, or OAKLAND; CALIFORNIA.

,connnoar lve MACHINE.

Application filed July 5,

Tb all wh'om it oac m-y ,1

Be it known that I, SAMUEL Loarna, a

citizen of the United States, and a resident of oakianaeoumy of Alameda and State of California, have invented a new and use ful" Corrugating Machine; of which the 'i ol-- lowing is 'a specification.

My invention relates to a corrugating ma-- adapted for corrugating chine, particularly sheet metal. I 1 7 An object of the invention is to provide a sl'ieet-n'ietal corrugating machine which is adapted upon the application of a slight st I my invention which is illustrated in the. drawings accompanying and torming partform within the scope of my fort'to'instantly exert apoweri'ul force on the work or release the application of such force.

Another Object of my invention is to provide a corrugating machine which may be adjusted to maintain any desired relationship between the corrng'ating rolls regardless of their distance apart.

'A further object is to provide a machine of the character described in which the pressure exerted by the rolls on the work may be evenly distributed throughout the length of therolls. v- I a A still further object of my inventionis to provide a machine. of the character describedfin which the relationship between the. corrugating rolls may be entirely controlled through a lever operatable with one hand.

The invention possesses otherobjects and features of advantage, some of which, with the foregoing will be set forth in the following description of the preferred form of of the specification. .It'is to be understood that I do not limit myself to the showing made by the said drawings and description, as I may adopt variations oi the preferred invention as set forth in the claims.

Referring to -said-drawings:- Figurel' is a side view of the corrugating machine of lily-invention.

Fig'Q is anen'dview of the machine. I Fig. 3 is'aneiilarged sectional view of a a portion of device taken-on the line g33 in'lfig l. v a

gt is "an enlarged sectional view of the device ,takenon the line -min Fig. 2.

Briefly expressedthe corrugating machine wo fmyinvention in its-present embodiment comprises. a frame. having afixed rotatable 192s. Seria1No.649,48 3.

7 pressure roll and an adjustable rotatable pressure roll whose shaft is mounted in slidiable bearings. Y A pair of levers in}. crumed on the frame and operatively and adjustablyv connectedat one end to stems attached to said bearings ,-springs being arranged abont'tjhe stems so as to resiliently hold saidlrolls apart; Movem'ent of therolls toward ea'ch other is e fi'ected by means of a hand lever wh ch is fulcrumed' to the frame and is provided with a cam portion .arw ranged to engage a guided ,s'lidable block to which the other ends of said levers are connected; The adjustable roll may beheld positively and locked in various desired po sit'ions. Driving-of the pressure rolls is effected by'fgears which are adapted tov remain in engagement regardless of the 'posi tion of the adjustable roll. 1

A detailed description follows zi The machine of'my invention in its presentembodiment is particularly adapted for corrugating flat sheets of metal or sheets bent-to cylindricalor other forms. 1 As illustrated, the machine comprises vframe 5 having a post 6 fron which upper and lower arms 7 and 8eXtend transversely. Mounted in bearings 10 and 11 carried in the frame between the arms is a pair of shafts 12and 13. The bearings 11 are preferably held fixed in the frame, while the bearings 10 are slidablyheld in guideways 14 to enable the.

shaft 12 to be moved transversely toand from the shaft 13. Removably mounted on the shafts 12 and 13 for rotation therewith are corrugating rolls 15 and 16 respectively, which are here shown fluted longitudinally and grooved circumferentially. 1

Fixed to the movable bearings 10, which bearings it will be noted are disposed at opposite ends of therolls, are vertical studs or stems 18 which extend through and above the :fraine. The rolls are resiliently held apart by meansof springs l9encircling the stems and interposed between the top of the frame and a nut 21v adjustably held on the stem. 1 I 1 Means are provided for causing both stems ,to be simultaneously depressed. Fulcrumed on the frame to swing in a plane parallelto the plane of movement of the roll 15 with respect to roll 16 is a pair of levers 22; one arm 23 of each of which is ie present embodiment of "the invention, engagement between the levers and stems is eflected by means of shoes 24 formed on the arms 23 arranged to rest in recesses 26 formed in nuts 27 which engage the thread ed portion 28 of the stem. It will be noted that the positioningof the nut 27 on the stem determines the effective length of the stem and thus affords an adjustable relationship between the stems and levers. The other arms 29 of the levers are connected to a slidable blotlr or cross-head 31 by means of links 82. The block is guided for move ment corresponding with that of the slidable roll by means of bars 33 fixed to the frame and engaging in suitable bores pro-- vided in the block.

Fulcrumed on the frame is a hand lever 34 onearm of which is in the form of a cam member 36 which is preferably arranged to engage a roller 37 carried on the block 31. Thus, by pulling the lever and elevating the block, motion will be communicated to the stems through the intermediate links '82 and levers against the resistance of the springs 19. By the use of the foregoing construction it will be clearly understood that a slight force applied to the lever handle 38 will cause the instant application of a powerful force to the metal which may be interposed between complementary parts of the rolls.

Means are provided for holding the adjustable roll in any desired position with respect to the fixed roll. as here shown, such means includes a pawl ll carried by the hand lever and arranged to engage a ratchet 42 which is adjustably secured to the movable block. The pawl is preferably associated with a spring 43 which tends to keep the pawl in engagement with the ratchet. T he pawl may be released from the ratchet by suitably pulling on a chain 44 after slightly depressing the hand lever.

Power for rotating the rolls is preferably transmitted through a clutch 46 to a drive gear 47 fixed on the'shaft 13. The motion of the gear 47 is transmitted to a gear 48 fixed on the shaft 12 by means of a pair of idler gears 4:9 and 50 mounted on fixed stub shafts carried on the post 6. The engagement of the gears 4-8 and 4:9 is such as to allow the vertical movement of the gear 48 without destroying their operative engagement. As here shown, the gear 4-8 is arranged to be moved tangentially across the face of the gear 49, so that considerable movement in its path is allowed without getting the gear entirely out of mesh, the movement of the roller shaft 12 relative to the shaft 13 being limited to maintain the meshed relation of the gears.

In the operation of the device, with the rolls suitably separated, the metal to be corrugated is inserted between the rolls. The hand lever is then depressed until the pawl engages in the desired ratchet notch,

the ratchet member having been previously adjusted on the block to afford the desired positioning of the roll 15, thus initially forming the metal immediately between the rolls with the desired corrugation. By then throwing in the clutch, power is applied to rotate the rolls to advance and corrugate the sheet. As soon as the corrugating operation is completed, the pawl may be withdrawn from the ratchet to enable separating of the rolls and removal of the work.

I claim:

i. In a corrugating machine, a frame, a rotatable corrugating roll mounted in said frame, a comp ementary corrugating roll mounted to move toward and from said first roll, levers fulcrumed on the frame connected to said second roll, means operatively connecting said levers, and a hand lever fulcrumed on said frame provided with a cam portion adapted to engage said means to rock said first levers.

In a corrugating machine, a frame, a rotatable corrugating roll mounted in said frame, a complementary corrugating roll, bearings at each end of said second roll slidably mounted in said. frame to permit movement of said roll toward and from said first roll, levers operatively connected to said bearings and fulcrumed on said frame to swing parallel to the plane of movement of said second roll, and means including a cam member for rocking said levers simultaneously.

3. In a corrugating machine, a frame, a rotatable corrugating roll fixedly mounted in said frame, a complementary corrugating roll, slidable bearings at each end of said second roll for enabling the latter to move towarc and from the first roll, stems extending from said bearings, levers fulcrumed on the frame having one of the arms thereof arranged to bear on said stems, a cross-head mounted on the frame, links connecting aid crosshead to the other arm of said levers, and means for moving said cross-head.

l. In a corrugating machine, a frame, a rotatable corrugating roll fixedly held in said frame, a complementary rotatablecorrugating roll, slid-able bearings at each end of said second roll for enabling the latter to move toward and from the first roll, stems attached to said bearings and extending throilgh. the frame, springs encircling said stems and arranged to yieldingly urge said second roll from said first, levers fulcrumed on the frame adapted to swing in a plane defined by the movement of said second roll, one of the arms of said levers be ing arranged to operatively engage said stems, means including a cross-head for connecting the other ends of said levers together, and a lever-operated cam for moving said cross-head.

5. In a corrugating machine, a frame, a rotatable corrugating roll fixedly held in said frame, a complementary rotatable corrugating roll mounted to move toward and from said first roll, levers fulcrumed'on the frame and having'one of their arms connected to the opposite ends of said second roll, a slidable member connected to the other arms of said levers, means for guiding said slidable member in a plane corresponding to the plane of movement of said second roll relative to the first, and manually operated means for moving said slidable member.

6. In a corrugating machine, a frame, a

rotatable corrugating roll held in saidframe,

a complementary rotatable corrugating' roll,

slidable bearings carrying said comp1ev from said first roll, levers fulcrumed on the frame and having one of their arms connected to the-opposite ends of said second roll, a slidable member connected to the other arms ofsaid levers, a ratchet member adjustably secured to and movable with said slidable member, a lever for moving said slidable'member in one direction, means re- 7 siliently urging said slidable member in the opposite direction, a pawl carried by said last named lever and arranged to engage a said ratchet, and means for releasing said pawl from engagement with said ratchet.

8. In a corrugating machine, a frame, a rotatable corrugating roll held in said frame, a complementary rotatable corrugating roll, slidable bearings carrying said complementary roll and carried on said frame, stems secured to said bearings, levers fulcrumed on the frame having one arm operatively connected to each of said stems, said levers being movable in a plane parallel to the plane ofmovement of the second roll relative to the first, a block guided for movement in a plane parallel to said first plane, links connecting said block to the other arms of said levers, a roller carried by said block, a lever fulcrumed on the frame, having a cam portion arranged to engage said roller, a ratchet adjustably fixed to said block, and a pawl arranged to engage said ratchet.

9. In a corrugating machine, a frame, a rotatable corrugating roll held in said frame, a complementary rotatable 'cor'rugating roll, slidable bearings carrying said complementary roll and carried on said frame, stems secured to said bearings, levers fulcrumed on the frame having one arm operatively connected to each of said stems, said levers being movable in a plane parallel to the plane of movement of the second roll relative to the first, a block guided for move ment in a plane parallel to said first plane, links connecting said block to the other arms of said levers, a roller carried by said block,

a lever fulcrumed on the frame, having a cam portion arranged to engage said roller,

a ratchet adjustably fixed to said block, a

pawl arranged to engage said ratchet, a driving gear axially aligned and fixed for rotation with said fixedly mounted roll, a driven gear axially aligned and fixed for rotation with said second roll, and a pair of idler gears arranged to operatively connect said drive and driven gears in all the posit1ons of said second roll with respect to the first.

10. In a corrugating machine, a frame, a

rotatable corrugating roll fixedly mounted in said frame, a complementary rotatable corrugating roll, slidable bearings carrying said complementary roll for movement toward and from saidfirst roll, levers fulcrumed on the frame, adjustable means connecting one end of the arms'of said levers to the bearings of said second roll, a slidable block member connected to the other arms of said levers, means for guiding said slidable block for reciprocation in the plane of movement ofv said second roll relative to the first, and manually operated means for moving said slidable member.

In testimony whereof, I have hereunto set my hand at Oakland, this 12th day of June, 

